十多年后，网络创造了一个替代空间，威胁着电视对社会的控制。

For more than a decade, the web created an alternative space that threatened television's grip on society.

youdao

史密斯先生谈到，随着美国人花费更多的时间在线，网络社交总体上升并开始替代个人在物理空间的活动。

As Americans spend more of their time online, social networking technology as a whole is growing and starting to replace activities individuals once performed in physical Spaces, Mr Smith said.

youdao

尽管LED灯比白炽灯利润空间更大，但灯源替代市场钟会趋于缩小。

Although LEDs will be more profitable than incandescent bulbs the replacement market will eventually dwindle.

youdao